Problem on Sluggable Listener default values merging

lib/Doctrine/Template/Listener/Sluggable.php

@@ -44,7 +44,7 @@ class Doctrine_Template_Listener_Sluggable extends Doctrine_Record_Listener
                                 'length'  =>  null,
                                 'options' =>  array(),
                                 'fields'  =>  array());
-    
+
     /**
      * __construct
      *
@@ -53,7 +53,7 @@ class Doctrine_Template_Listener_Sluggable extends Doctrine_Record_Listener
      */
     public function __construct(array $options)
     {
-        $this->_options = array_merge($options, $this->_options);
+        $this->_options = Doctrine_Lib::arrayDeepMerge($this->_options, $options);
     }
 
     public function preInsert(Doctrine_Event $event)
@@ -61,7 +61,7 @@ class Doctrine_Template_Listener_Sluggable extends Doctrine_Record_Listener
         $name = $this->_options['name'];
 
         $record = $event->getInvoker();
-        
+
         if (!$record->$name) {
             $record->$name = $this->buildSlug($record);
         }
@@ -80,4 +80,4 @@ class Doctrine_Template_Listener_Sluggable extends Doctrine_Record_Listener
 
         return Doctrine_Inflector::urlize($value);
     }
-}
\ No newline at end of file
+}

lib/Doctrine/Template/Sluggable.php

@@ -44,7 +44,7 @@ class Doctrine_Template_Sluggable extends Doctrine_Template
                                 'length'  =>  null,
                                 'options' =>  array(),
                                 'fields'  =>  array());
-    
+
     /**
      * __construct
      *
@@ -55,7 +55,7 @@ class Doctrine_Template_Sluggable extends Doctrine_Template
     {
         $this->_options = Doctrine_Lib::arrayDeepMerge($this->_options, $options);
     }
-    
+
     /**
      * setTableDefinition
      *
@@ -64,7 +64,7 @@ class Doctrine_Template_Sluggable extends Doctrine_Template
     public function setTableDefinition()
     {
         $this->hasColumn($this->_options['name'], $this->_options['type'], $this->_options['length'], $this->_options['options']);
-        
+
         $this->addListener(new Doctrine_Template_Listener_Sluggable($this->_options));
     }
-}
\ No newline at end of file
+}